FIELD: measurement equipment.
SUBSTANCE: invention refers to laser spectroscopy and spectral analysis and can be used for simultaneous diagnostics of absolute and relative content of carbon oxides CO and CO2 in gaseous medium, for monitoring of CO and CO2 carbon oxides content, for example in expired air, in atmosphere, namely for biomedical diagnostics. For the analysis there used CO and CO2 absorption lines entering the spectral range overlapped with frequency-controlled laser and not overlapping with water vapours absorption lines. Optical frequency of laser is scanned due to laser pumping with periodic repetitive current pulses of certain amplitude, length and repetition rate. Laser radiation is passed through multipass optical cell containing the gaseous medium under investigation with certain optical path length.
EFFECT: invention allows simultaneous determination of CO and CO2 molecules concentration in gaseous medium.
4 cl, 2 dwg
